Revert "replace obsoleted MYSQL variables"

This reverts commit f6f5931e753c054a9c02e4a61de381ea9314fdd0.
Revert "set CONFIG_SWIFT_STORAGES to default"

This reverts commit 40fb52b74d8e62434ffe0784b8a9f8dcc748c789.
Revert "Revert "set CONFIG_SWIFT_STORAGES to default""

This reverts commit a075a55262b6b5afc02e784d2f1984ba3afa7ef0.